Phyllis had always been the one to take care of Douglas, now he feels as if it is his duty and privilege to take care of her, ev

Answer:

155.38424 K

2.2721 kg/m³

Explanation:

= Reservoir pressure = 10 atm

= Reservoir temperature = 300 K

= Exit pressure = 1 atm

= Exit temperature

= Specific gas constant = 287 J/kgK

= Specific heat ratio = 1.4 for air

Assuming isentropic flow

Flow temperature at exit is 155.38424 K

Density at exit can be derived using the ideal gas equation

Flow density at exit measures 2.2721 kg/m³

Answer:

option D.

Explanation:

The correct choice is option D.

For an object in equilibrium, the torque measured at any point will be zero.

An object is deemed to be in equilibrium when the net moment acting on it equals zero.

If the object experiences a net moment not equal to zero, it will rotate and will not remain stable.

Answer and Explanation:

currents i = 2.9 A

           i ' = 4.4 A

The magnitude (in T.m) of the path integral of B.dl around the window frame is calculated as = μo * the enclosed current

          = μo* ( i ' - i )

According to Ampere's law

where μo = permeability of free space = 4π * 10 ^-7 H/m

Substituting the values gives us the magnitude (in T.m) of the path integral of B.dl = (4π*10^-7)(2.9+4.4)

                                 = 1.884 * 10^-6 Tm

Response:

d) In container A, the average kinetic energy per molecule exceeds that of container B.

e) Molecules in A exhibit a higher speed than those in B.

Reasoning:

Both containers are of identical size.

This indicates that the volume of each container is equal to V.

Temperature in container A is 50°C, which equals 323 K.

Temperature in container B is 10°C, equating to 283 K.

According to the ideal gas law:

P V = m R T

The quantities of gas mass are unspecified, making it impossible to determine which has a higher temperature or a greater number of molecules.

However, it is known that the average kinetic energy is directly related to the absolute temperature of a gas; thus, the kinetic energy in container A is greater due to its higher temperature. A higher kinetic energy implies increased molecular velocity.

Consequently, options d and e are accurate.

d) In container A, the average kinetic energy per molecule exceeds that of container B.

e) Molecules in A exhibit a higher speed than those in B.

The energy contained in a photon is determined by the formula:

where h represents the Planck constant and f signifies the frequency of the photon. Given the energy of the photon, , we can rearrange the equation to deduce the photon's frequency:


Now, we can use the relationship that links frequency f, wavelength , and the speed of light c to ascertain the wavelength of the photon: